Electric switch



July 14, 1925. 1,546,173 H. J. H. HUBER ELECTRIC SWITCH File March 2,1925 2 Sheets-Sheet 1 Invehtow:

H evm an v.1. H Huber b Mm July 14, 1925. 1546:1 73

H. J. H. HUBER ELECTRIC SWITCH Filed March 2,5 192: 2 Sheets-Sheet 2Fig.2.

23 Inventor:

Herman J.H. Huber,

u a w Hi'SAttoP'ne rlirst tearing down Patented July 14, 1925.,

UNITED; STATES PATENT OFFICE.

HERMAN J. H. HUBER, OF SCHENECTADY, NEW YORK, ASSIGNOR TO GENERAL ELEC-TRIO COMPANY, A CORPORATION OF NEW YORK.

ntncrnrc swrrcn.

- Application filed March 2, 1923. Serial No. 622,376. 7

To aZZ whom itmag concern:

Be it known that I, HERMAN J. H. HUBER, a citizen of the United States,residing at Schenectady, county of Schenectady, State of New.York, haveinvented certain new and useful Improvements in Electric Switches, ofwhich the following is a specification.

My invention relates to electric switches of the oil break type in whichthe final break occurs between contacts arranged-in an explosionchamber, such switches being the formusually. employed to control highpotential circuits.

An object of my invention is to provide a switch structure which shallbe adapted to be readily assembled, tohave its parts adjusted to obtainthe proper alinement, and

to be firmly secured together against accidental displacement.

Another object is to provide a construction in which the fixed contactmemberofx the switch may be adjusted and inspected conveniently andwithout the necessity of portions comprising the explosion chamber.

My invention will be better understood by reference to the accompanyingspecification and drawings and its scope will be pointed out in. tneappended claims.

Figure '1 is a perspective view of the switch mechanism and thesupporting means therefor, and

Fig. 2 is-a vertical sectional view, drawn to a larger scale, through aportion of the switch mechanism and its support.

Referring to Fig. l of the drawings, 1 represents the cover' of an oilpot, not shown, in which.- the switch mechanism is contained. Insulatorbushings 2, 2 pass through and are secured intermediate their length tothe cover 1 and preferably inclined inthe manner illustrated. To thelower ends of the insulator bushings are adj uslably secured, in themanner to be here inat'ter described, adapters 3 which serve to carrythe main stationary contacts 4 of the switch, the explosion chambers'and the auxiliary fixed contacts which are mounted with explosionchambers. The two adapt-- ers are firmly secured together in the properhave a slight pivotal movement on an operating rod 8-which extendsup'out ofth'e cover and is adapted to be raised or lowered by suitablemechanism, not shown, for respectively closing and opening the switch.The lower end of the rod 8 carries a cross head 9 to each end of whichis secured a block 10 by bolts 11. Each block carries a rod 12constituting the movable member of the-auxiliary or explosion chamberswitch and the blocks themselves are mount-" ed to be adjusted toward orfrorn'each other by providing them with slots through which pass thebolts 11. The inner ends' of' the' blocks 10 have downwardl projectinglugs which are joined together in connection by straps 13.

.70 good-electrical Referring now to .Fig. 2 showing "the lower end ofthe insulator bushing 2 and the conductor rod 15 passing through it, itwill be seen that the adapter 3 is secured to the insulator bushing 2through the instlunle'ntality of a washer 16. This washer is" clampedtothe lower end of the bushing by a nut 17 threaded on the conductor'rod15, suitable friction washers 18 being pro'-' vided between the bushingand the washer 16. The adapter 3 has its upper end in- (lined andprovided with an annular flange 19 whose upper. face abuts a flange 20on the washer 16. The inner edge of the flan e 19 and the opposedportion of the was 1er 16 are beveled as shown to form a substantiallyV-shaped annular grooye'and seated in this groove is a transverselysplit ring 21 havlng beveled surfaces corresponding to' those of theflange 19 and washer 16.

Bolts 22 extending through openings provided for that purpose in theflange 20 are threaded into the rin 21 andby tighten-v ing these boltsthe a apter may be firmly secured to the insulator bushing in anydesired positionof adjustment. Thus, should it be found that throughsome irregularity of construction or mounting of the insulator bushingthere existed a deviation in the angle made by thebushing from thatneces v sary for the vertical positioning of the fixed explosion chambercontacts or the proper alinerncntof the main stationary contacts, theadapter may be rotated sli htly relatively to the bottom washer an whenin the proper position, secured thereto by tightening the bolts 10;

The lower or base portion of the adapter 3 has a central threadedopening and a laterally extending flange23 against which is clamped asimilar flange 24 of a rcccptacle 25 forming an explosion chamber.

Plate 26 supported from the receptacle 25 carries the externalinsulation tube 6 secured to it by fiber screws 28 and has a guide tube29 for the contact rod 12 thread: ed into it at its central portion. Abottom plate 30 of insulation is also threaded on the tube 29. A contactretainer 31 has a lower screw threaded portion 18 engaging in theaforementioned threaded opening in the adapter 3 to which is securedinany 4 desired position, of .vertical' adjustment by a lock nut 32. Theadapter is preferably so constructed'that the center line of the con-,

tact container 31 i tersects the center line of the rod and-bush g inthe plane of the lower end face ofthe bushing. The fixed on the innersurface of the container and byv an annular member 37 secured to thecontainer by screws 38. Conductors 39 provide a good electricalconnection between the segments of the contact members and the retainer,the stationary contacts of the main switch, being preferabl attached -tolaterally projecting lugs 40; ormedv on the lower portion of the ads.ter. It should be noted that one side of t e adapter, preferablv thelonger side, is cutaway, thereby giving access to the contact containerfor the purpose ofadjustment or removal without the necessity of firstremoving the explosion chamber as has heretofore been necessary.

For obvious reasons it is desirable. that all the switches controllingthe same circuit shouldopen at the same instant. Where variations arelikely to occur in the sizes of parts, which is particularly true in thecase of the length of the insulating bushings 2, it becomes necessary toraise or;-

lower the contact holder 31 so that the times at which the breaks occurin a number of switches as well as the two breaks.of the same switch maybe made substantially the same. Adjustment of each auxiliary switchfixed contact of the present switch is readily effected by loosening thelock nut 32 and then rotating the contact holder bodily to raise orlower the same as desired.

By the above described construction it will be seen that I haveprovided-=21 structure which may be readily-attachedto the lower end ofa supporting bushing and; wherein the stationary contact member may beadjusted to a vertical position by a rotative adjustment of the adapterrelative to the bushing in the event that the bushing does not make theproper'angle, The position of the stationary contact member may fur-'are mounted on the cross head 9 to provide for a limited lateraladjustment it is unnecessary to make provision for the lateraladjustment of the stationary-contacts which cooperate therewith.

lVhile I have described only one embodiment of my invention, I donot'wish to be limited to the particular form shown and described as itwill be apparent that many modifications therein may be made withoutdeparting from the scope of my invention as set forth in the appendedclaims.

=lVl1at I claim as new and desire to secure by Letters Patent oftheUnited States, is,-.--.

'2. In an electric switch device, the com- .bination' of an inclinedsupporting member,

- a washer secured thereto, a fixed contact, an

adapter adjustable on said washer for supporting said fixed contact, andmeans for clamping sa'id adapter to said washer in adjusted position.

3. In an electric switch device, the com bination of a supportinginsulator bushing, an annular member at the end thereof, means forrigidly securing said member to said bushing, a fixed contact, anadapter for supportin said fixed contact in a substantially verticzfiposition and means for clamping said adapter to said member in variouspositions of angular adjustment. 1

4. In an electric switch device, the combination of a dependinginsulator bushing having-a conducting rod extending therethrough, awasher, means engaging said rod.

for clamping said washer to' said bushing,' a fixed contact, an adapterfor supporting said fixed contact, said washer and said adapter havingopposed annular surfaces and means engaging said opposed annularsurfaces for clamping said parts'together in various posi- Y tions ofangular adjustment.

5. In-an electric-switch device, the combination of aninclineddependinginsulator bushing having a conducting rod extending therethrough, awasher, means engagin said rod for clamping said washer to said ushing,a fixed contact, an"adapter for supios porting said fixed contact in'asubstantially vertical position, said washer and said adapter being inengagement with each other being provided with opposed annular inclinedsurfaces, a ring "having a pair of corresponding surfaces and ieansfordrawmg said ring into wedgmg engagement with said washer and saidadapter to clamp said members together. in any desired position ofangular ad ustment.

6. Inan electric switch device, the com bination of an inclineddepending insulator bushing having a conducting rod extendingtherethrough, a washer, a nut on said rod for clamping saidwasher totheend of saidbushing, a fixed contact, an adapter for supporting saidfixed contact, said adapter havmg ,an annular flange engagmg the underside of said washer, said washer and said adapter having opposedinclined annular means for ad'ustabl securin said contact.

retainer to said adapter.v

8. In an. electric switch device, the combination of an -insulatorbushing an adapter" 0 I carried thereby having an open side, and

' a contact retainer mounted in said adapter to have vertical ad ustmenttherein.

9. In an electric switch device, the combination of an insulatorbushing, an adapter carried thereby, anda contact retainer threaded intosaid adapter and extending- 1,546,173,' Heman J. H

dated Jul Electric ompany.

into the interior thereof, said ada ter having an open side forrendering sai retainer accessible.

10. In an electric switch device, the com bination of an insulatorbushing, an adapte secured to the lower end thereof having a baseportion provided with a central threaded opening, a contact retainerthreaded into said opening, stationary switch contacts carried thereby,a lock nut on the threaded portion of said retainer above the baseportion of said adapter, and an explosion chamber secured-to the underside of said adapter, said contact retainer extending up into saidadapter and said adapter having one side portion cut away whereby thelock nut and the contact retainer are rendered accessible without theremoval of the explosion chamber.

11. An electric switch comprising an explosion chamber, amovable contactprojecting up through the bottom thereof, a fixed contact in the top ofsaid chamber and means extending above the clia'nber' forefl'ectingvertical adjustment of aid fixed contact. I

12. An electric switch comprising an explosion chamber, a movablecontact pro'ecting. up through the bottom thereof, a xed contact, and aretainer for said contact threaded into and extending above the top ofsaid chamber, whereby the position of said contact may be adjustedvertically from withoutthe chamber.

In witnesswhereof, I have hereunto set my hand this first day of March,1923.

HERMAN J. H. HUBER.

-DISOL AIMER.

Huber, Schenectady, N. Y. ELECTRIC Swrrcu. Patent 14, 1925. Disclaimerfiled March 3, 1926, by the assignee, General Hereby enters thisdisclaimer under the provisions of and for the purpose set forth in rulel8l,'to the following claims in said Letters Patent, to wit:

1. In an electric switch device, the combination of a sup-portingmember, a fixe contact, an adapter for supporting said fixed contact andmeans for securing said adapter to said member in various positions ofangular adjustment.

2. In an electric switch device, the combination of an inclinedsupporting member, a washer secured thereto, a. fixed contact, anadapter ad ustable on said washer for support-ing'said fixed contact,and means for clamping said adapter to said washer in adjusted position.

3. In an electric switch device. the combination of a supportinginsulator bushing, an annular member at thc'end't-hcreof, means forrigidly securing said member to said bushing, a. fixed contact, anadapter for supporting said fixed contact in a substantially verticalposition and means for clamping said adapter to said member in variouspositions of angular adjustment. Y I

7. In anelectric switch device, the combination of an insulator bushing,an adapter carried therclu'. a contact retainer and means for adjustablysecuring said contact retainer to said adapter.

[Officz'al Gazette March 23, 1.926.]

